body, html {
    margin: 0;
    padding: 0;
  }
  
  body {
    background-color: #000;
    color: #fff;
    font-size: 1.2rem;
    font-family: monospace;
  }
  
  main {
    width: 60%;
    margin: 0 auto;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    position: absolute;
    top:0; 
    bottom:0; 
    right:0; 
    left:0;
  }
  
  p {
    padding: 0 2.85em;
  }
  
  .grid {
    width: 60%;
    margin: 0 auto;
    display: grid;
    grid-template-columns: repeat(3, 1fr);
  }
  
  button {
    border: none;
    margin: 1em auto;
    width: 8em;
    height: 2em;
    transition-duration: 500ms;
    cursor: pointer;
    font-family: monospace;
  }
  
  button:hover {
    background-color: #ccc;
  }